Software Tools
Programmed
SDO Request:
Example 2
(*request*)
READ_VAR(ADR#y.1.SYS,'SDO', _
Index_dw,Node_Id,Diag0:120,Status1:4);
END_IF;
This example shows the program for saving parameters with object 1010H. The data to be sent is contained in the table Diag0:4 (defined below).
Variables used and parameters of the function
Variable | Type | Description |
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Write_sdo | Boolean | Request launch bit. |
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Index | Word | Index of the object to poll (LSB of the double word |
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| "Index_dw"). |
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Word | ||
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| word "Index_dw"). |
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Slave_add | Word | Address of the slave to poll. |
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Diag0:120 | Word table | Data exchange area. |
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Status0:4 | Word table | Control and exchange status words. |
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ADR#y.SYS | Immediate value | Master board address. |
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‘SDO’ | Character string | Type of SDO object (SDO always in upper case). |
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Index_dw | Double word | MSB = |
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| LSB = index. |
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Node_Id | Word | Word or value identifying the destination device |
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| on the CANopen bus. |
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Program
Slave_add:=2 (*node at address 2 on the CANopen network*) Index:=16#1000; (*index 1000H*)
Sub_index:=0;
Diag0:=16#6173; (*'as'*)
Diag0[1]:=16#6576; (*'ev'*)
IF write_sdo THEN (*clear control*) write_sdo:=FALSE;
(*Parameter update*)
1606218 02 08/2006 | 121 |